Axle-box.



No. 644,07I. Patented Feb. 27, |900. H. GUMMI.

AXLE BOX.

(Application 1ed Apr. 7, 1899.) (No Mudel.) 2 Sheets-Sheet I.

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No. 644,07I. Patented Feb. 27, |900.

H. GUMMI.

AXLE BOX.

(Application lad Apr. 7, 1899.) (No Model.) 2 Sheets-ShamA 2.

d/g Ff UNITED STATES PATENT OFFICE.

HANS GUMMI, oE RAUTzEN, GERMANY, AssIGNoR 0E ONE-HALE To HERMANN oTTo, oF GRLITz, GERMANY.

SPECIFICATION forming part of Letters Patent No. 644,071, dated February 27, 1900. Application led April 7| 1899. Serial No. 712,140. (No model.)

ful Improvements in Axle-Boxes, of which the following is a specification.

This invention, which relates to axle-boxes for railway and tramway carriages and the like, consists, substantially, of an axle-box which is displaceable horizontally in two directions-z'. e., in the direction of travel as well as at a right angle thereto-and isre turned to itsI normal position' by means ot' spiral springs and a guiding-frame which is connected with the bearing-spring in order that a complete radial adjustment of the axle end may be secured at every bend of the road, and thereby the wear of the tires and rails considerably reduced when running on curves. Furthermore, in consequence of the radial adjustment of the axles the distance between them when running-on a curve will be increased. Thereby a smoother travel is obtained and the carriage is prevented from running off the track.

Figure l of the acoompanyingdrawings is a vertical section of an axle-box constructed according to the invention; Fig. 2, a horizontal section, and Fig. 3 is a vertical cross-section, of the same. Fig 4 is a front View elevation of the same. Fig. 5 is a diagram showing part of the track and the radial adjustment of the carriage-axle on a curve.

The iixed guiding-frame a, on which the bearing-spring b is arranged, is fitted with two transversely-arranged spiral springs c, lying opposite to one another at a right angle to the axle and bearing on the opposite sides of the axle-box d,so that the end of thelatter may be displaced in the direction of travel. The axleboX d is fitted with two longitudinallyarranged spiral springs e, arranged parallel to at a right angle thereto.

the axle and bearing against the end 'of frame a., so as to enable the end of the axle to be displaced in the direction ot' its length-z'. e., at a right angle to the direction oftravel.

The construction of the present axle-box diiers essentially from those hitherto known in the factthat the actual axle-box is displaceable horizontally in a iixed guidingframe a in the direction of travel as well as The axle-box is closed at the end by a cover g, which is kept closed by means of an iron piece or pivoted strap f. This last-mentioned piece is screwed up tightly by means of a winged nut e'. A lubricating apparatus h prevents the axle from becoming hot in the axle-bearing. removing the cover g the lubricating vessel h can be conveniently removed. Packingrings or the like arranged at suitable spots prevent dust,dirt, or other matter from penetrating into the axle-bearings.

The axle-box hereinbefore described can be applied to all carriages running on rails, and any alteration thereof made in accordance with the necessary dimensions of the axle is purely constructional in its nature.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- In an axle-bearing, an axle-box, a pair of springs o, arranged at right angles thereto and adapted to permit a lateral displacement A of the box, and a pair of springs e, fitted to day of March, 1899.

HANS GUMMI. Witnesses:

OTTO B. GULIGH, OTTO LUoHs. 

